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| Comment: | Continuing work on the bubble syntax diagrams. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
2bb38606e0cd20d0011d15e9e7ad1c9b |
| User & Date: | drh 2008-10-01 17:25:48 |
|
2008-10-01
| ||
| 19:48 | Continuing work on the syntax bubble diagrams. (check-in: f73a84dfb0 user: drh tags: trunk) | |
| 17:25 | Continuing work on the bubble syntax diagrams. (check-in: 2bb38606e0 user: drh tags: trunk) | |
|
2008-09-29
| ||
| 20:57 | Continuing work on the syntax bubble-diagram generator. (check-in: effc38b25c user: drh tags: trunk) | |
Changes to art/syntax/bubble-generator.tcl.
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canvas .c -bg white
pack .c -side top -fill both -expand 1
wm withdraw .
# Graphs:
#
set all_graphs {
create-table-stmt {
stack
{line CREATE {or {} TEMP TEMPORARY} TABLE}
{opt {line IF NOT EXISTS}}
{line {opt {line database-name .}} table-name}
{tailbranch
{line ( {loop column-def ,} {loop {} {, constraint}} )}
{line AS select}
}
}
create-table-stmt-long {
stack
{line CREATE {or {} TEMP TEMPORARY} TABLE {opt {line IF NOT EXISTS}}}
{line {opt {line database-name .}} table-name
{tailbranch
{line ( {loop column-def ,} {loop {} {, constraint}} )}
{line AS select}
}
}
}
column-def {
line column-name {or
{}
{line type-name}
{line type-name ( number )}
{line type-name ( number , number )}
} {loop {} column-constraint}
}
column-def-b {
line column-name {opt
{line type-name
{opt
{line ( number {opt {line , number}} )}
}
}
} {loop {} column-constraint}
................................................................................
{or
{line PRIMARY KEY conflict-clause {opt AUTOINCREMENT}}
{line NOT NULL conflict-clause}
{line UNIQUE conflict-clause}
{line CHECK ( expr )}
{line DEFAULT {or value {line ( expr )}}}
{line COLLATE collation-name}
}
}
constraint {
or
{line {or {line PRIMARY KEY} UNIQUE}
( column-list ) conflict-clause}
{line CHECK ( expr )}
}
conflict-clause {
opt {line ON CONFLICT {or ROLLBACK ABORT FAIL IGNORE REPLACE}}
}
}
# Draw the button bar
................................................................................
set bn 0
foreach {name graph} $all_graphs {
incr bn
set b .bb.b$bn
button $b -text $name -command [list draw_graph $name $graph]
pack $b -side top -fill x -expand 1
}
set tagcnt 0 ;# tag counter
set font1 {Helvetica 16 bold} ;# default token font
set font2 {Helvetica 15} ;# default variable font
set RADIUS 13 ;# default turn radius
set DPI 80 ;# dots per inch
................................................................................
# Draw a bubble containing $txt.
#
proc draw_bubble {txt} {
global tagcnt
incr tagcnt
set tag x$tagcnt
if {[regexp {^[a-z]} $txt]} {
set font $::font2
set istoken 0
} else {
set font $::font1
set istoken 1
}
................................................................................
set back_y [expr {$btm + $sep + 1}]
.c move $t $enter_x $enter_y
set e2 [expr {$exit_x + $sep}]
.c create line $exit_x $exit_y $e2 $exit_y \
-width 2 -tags $tag
draw_right_turnback $tag $e2 $exit_y $back_y
set e3 [expr {$enter_x-$sep}]
.c create line $e2 $back_y $e3 $back_y \
-width 2 -tags $tag
set r2 [expr {($enter_y - $back_y)/2.0}]
draw_left_turnback $tag $e3 $back_y $enter_y
.c create line $e3 $enter_y $enter_x $enter_y \
-arrow last -width 2 -tags $tag
set exit_x [expr {$enter_x + $exx}]
set exit_y [expr {$enter_y + $exy}]
}
.c addtag $tag withtag $t
.c dtag $t $t
set btm [lindex [.c bbox $tag] 3]
}
set width [lindex [.c bbox $tag] 2]
return [list $tag $width $exit_y]
}
proc draw_loop {forward back} {
global tagcnt
incr tagcnt
set tag x$tagcnt
set sep $::RADIUS
set vsep [expr {$sep/2}]
foreach {ft fexx fexy} [draw_line $forward] break
foreach {fx0 fy0 fx1 fy1} [.c bbox $ft] break
set fw [expr {$fx1-$fx0}]
foreach {bt bexx bexy} [draw_backwards_line $back] break
foreach {bx0 by0 bx1 by1} [.c bbox $bt] break
set bw [expr {$bx1-$bx0}]
set dy [expr {$fy1 - $by0 + $vsep}]
.c move $bt 0 $dy
................................................................................
if {$fw>$bw} {
set dx [expr {($fw-$bw)/2}]
.c move $bt $dx 0
set bexx [expr {$dx+$bexx}]
.c create line 0 $biny $dx $biny -width 2 -tags $bt
.c create line $bexx $bexy $fx1 $bexy -width 2 -tags $bt -arrow first
set mxx $fx1
} elseif {$bw>$fw} {
set dx [expr {($bw-$fw)/2}]
.c move $ft $dx 0
set fexx [expr {$dx+$fexx}]
.c create line 0 0 $dx $fexy -width 2 -tags $ft
.c create line $fexx $fexy $bx1 $fexy -width 2 -tags $ft
set mxx $bx1
}
.c addtag $tag withtag $bt
.c addtag $tag withtag $ft
.c dtag $bt $bt
.c dtag $ft $ft
.c move $tag $sep 0
set mxx [expr {$mxx+$sep}]
................................................................................
}
if {$cmd=="stack"} {
return [draw_stack [lrange $spec 1 end]]
}
if {$cmd=="loop"} {
return [draw_loop [lindex $spec 1] [lindex $spec 2]]
}
if {$cmd=="or"} {
return [draw_or [lrange $spec 1 end]]
}
if {$cmd=="opt"} {
return [draw_or [list {} [lindex $spec 1]]]
}
if {$cmd=="tailbranch"} {
................................................................................
.c config -width $x1 -height $y1
update
.c postscript -file $name.ps -width $x1 -height $y1
global DPI
exec convert -density ${DPI}x$DPI -antialias $name.ps $name.gif
exec xv $name.gif &
}
|
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canvas .c -bg white
pack .c -side top -fill both -expand 1
wm withdraw .
# Graphs:
#
set all_graphs {
alter-table-stmt {
stack
{line ALTER TABLE {opt {line database-name .}} table-name}
{tailbranch
{line RENAME TO new-table-name}
{line ADD {opt COLUMN} column-def}
}
}
X-create-table-stmt-1 {
stack
{line CREATE {or {} TEMP TEMPORARY} TABLE}
{opt {line IF NOT EXISTS}}
{line {opt {line database-name .}} table-name}
{tailbranch
{line ( {loop column-def ,} {loop {} {, table-constraint}} )}
{line AS select-stmt}
}
}
create-table-stmt {
stack
{line CREATE {or {} TEMP TEMPORARY} TABLE {opt {line IF NOT EXISTS}}}
{line {opt {line database-name .}} table-name
{tailbranch
{line ( {loop column-def ,} {loop {} {, table-constraint}} )}
{line AS select-stmt}
}
}
}
column-def {
line column-name {or type-name nil} {loop {} column-constraint}
}
type-name {
line {loop name {}} {or {}
{line ( number )}
{line ( number , number )}
}
}
X-column-def-c {
line column-name {or
{}
{line type-name}
{line type-name ( number )}
{line type-name ( number , number )}
} {loop {} column-constraint}
}
X-column-def-b {
line column-name {opt
{line type-name
{opt
{line ( number {opt {line , number}} )}
}
}
} {loop {} column-constraint}
................................................................................
{or
{line PRIMARY KEY conflict-clause {opt AUTOINCREMENT}}
{line NOT NULL conflict-clause}
{line UNIQUE conflict-clause}
{line CHECK ( expr )}
{line DEFAULT {or value {line ( expr )}}}
{line COLLATE collation-name}
{line foreign-key-clause}
}
}
table-constraint {
stack
{opt {line CONSTRAINT name}}
{or
{line {or {line PRIMARY KEY} UNIQUE}
( column-list ) conflict-clause}
{line CHECK ( expr )}
{line FOREIGN KEY ( column-list ) foreign-key-clause }
}
}
foreign-key-clause {
stack
{line REFERENCES foreign-table {opt {line ( column-list )}}}
{toploop
{or
{line ON {or DELETE UPDATE INSERT}
{or {line SET NULL} {line SET DEFAULT}
CASCADE RESTRICT
}
}
{line MATCH name}
nil
}
{}
}
{or
{line {opt NOT} DEFERRABLE
{or
{}
{line INITIALLY DEFERRED}
{line INITIALLY IMMEDIATE}
}
}
nil
}
}
X-foreign-key-action {
or
{line MATCH name}
{line ON {or DELETE UPDATE INSERT}
{or {line SET NULL} {line SET DEFAULT}
CASCADE RESTRICT
}
}
}
X-foreign-key-deferment {
line {opt NOT} DEFERRABLE
{or
{}
{line INITIALLY DEFERRED}
{line INITIALLY IMMEDIATE}
}
}
conflict-clause {
opt {line ON CONFLICT {or ROLLBACK ABORT FAIL IGNORE REPLACE}}
}
}
# Draw the button bar
................................................................................
set bn 0
foreach {name graph} $all_graphs {
incr bn
set b .bb.b$bn
button $b -text $name -command [list draw_graph $name $graph]
pack $b -side top -fill x -expand 1
}
incr bn
set b .bb.b$bn
button $b -text Everything -command {draw_all_graphs}
pack $b -side top -fill x -expand 1
set tagcnt 0 ;# tag counter
set font1 {Helvetica 16 bold} ;# default token font
set font2 {Helvetica 15} ;# default variable font
set RADIUS 13 ;# default turn radius
set DPI 80 ;# dots per inch
................................................................................
# Draw a bubble containing $txt.
#
proc draw_bubble {txt} {
global tagcnt
incr tagcnt
set tag x$tagcnt
if {$txt=="nil"} {
return [list $tag 0 0]
}
if {[regexp {^[a-z]} $txt]} {
set font $::font2
set istoken 0
} else {
set font $::font1
set istoken 1
}
................................................................................
set back_y [expr {$btm + $sep + 1}]
.c move $t $enter_x $enter_y
set e2 [expr {$exit_x + $sep}]
.c create line $exit_x $exit_y $e2 $exit_y \
-width 2 -tags $tag
draw_right_turnback $tag $e2 $exit_y $back_y
set e3 [expr {$enter_x-$sep}]
set emid [expr {($e2+$e3)/2}]
.c create line $e2 $back_y $emid $back_y \
-width 2 -tags $tag -arrow last
.c create line $emid $back_y $e3 $back_y \
-width 2 -tags $tag
set r2 [expr {($enter_y - $back_y)/2.0}]
draw_left_turnback $tag $e3 $back_y $enter_y
.c create line $e3 $enter_y $enter_x $enter_y \
-arrow last -width 2 -tags $tag
set exit_x [expr {$enter_x + $exx}]
set exit_y [expr {$enter_y + $exy}]
}
.c addtag $tag withtag $t
.c dtag $t $t
set btm [lindex [.c bbox $tag] 3]
}
set width [lindex [.c bbox $tag] 2]
return [list $tag $exit_x $exit_y]
}
proc draw_loop {forward back} {
global tagcnt
incr tagcnt
set tag x$tagcnt
set sep $::RADIUS
set vsep [expr {$sep/2}]
foreach {ft fexx fexy} [draw_diagram $forward] break
foreach {fx0 fy0 fx1 fy1} [.c bbox $ft] break
set fw [expr {$fx1-$fx0}]
foreach {bt bexx bexy} [draw_backwards_line $back] break
foreach {bx0 by0 bx1 by1} [.c bbox $bt] break
set bw [expr {$bx1-$bx0}]
set dy [expr {$fy1 - $by0 + $vsep}]
.c move $bt 0 $dy
................................................................................
if {$fw>$bw} {
set dx [expr {($fw-$bw)/2}]
.c move $bt $dx 0
set bexx [expr {$dx+$bexx}]
.c create line 0 $biny $dx $biny -width 2 -tags $bt
.c create line $bexx $bexy $fx1 $bexy -width 2 -tags $bt -arrow first
set mxx $fexx
} elseif {$bw>$fw} {
set dx [expr {($bw-$fw)/2}]
.c move $ft $dx 0
set fexx [expr {$dx+$fexx}]
.c create line 0 0 $dx $fexy -width 2 -tags $ft
.c create line $fexx $fexy $bx1 $fexy -width 2 -tags $ft
set mxx $bexx
}
.c addtag $tag withtag $bt
.c addtag $tag withtag $ft
.c dtag $bt $bt
.c dtag $ft $ft
.c move $tag $sep 0
set mxx [expr {$mxx+$sep}]
.c create line 0 0 $sep 0 -width 2 -tags $tag
draw_left_turnback $tag $sep 0 $biny
draw_right_turnback $tag $mxx $fexy $bexy
foreach {x0 y0 x1 y1} [.c bbox $tag] break
.c create line $mxx $fexy $x1 $fexy -width 2 -tags $tag
return [list $tag $x1 $fexy]
}
proc draw_toploop {forward back} {
global tagcnt
incr tagcnt
set tag x$tagcnt
set sep $::RADIUS
set vsep [expr {$sep/2}]
foreach {ft fexx fexy} [draw_diagram $forward] break
foreach {fx0 fy0 fx1 fy1} [.c bbox $ft] break
set fw [expr {$fx1-$fx0}]
foreach {bt bexx bexy} [draw_backwards_line $back] break
foreach {bx0 by0 bx1 by1} [.c bbox $bt] break
set bw [expr {$bx1-$bx0}]
set dy [expr {-($by1 - $fy0 + $vsep)}]
.c move $bt 0 $dy
set biny $dy
set bexy [expr {$dy+$bexy}]
set by0 [expr {$dy+$by0}]
set by1 [expr {$dy+$by1}]
if {$fw>$bw} {
set dx [expr {($fw-$bw)/2}]
.c move $bt $dx 0
set bexx [expr {$dx+$bexx}]
.c create line 0 $biny $dx $biny -width 2 -tags $bt
.c create line $bexx $bexy $fx1 $bexy -width 2 -tags $bt -arrow first
set mxx $fexx
} elseif {$bw>$fw} {
set dx [expr {($bw-$fw)/2}]
.c move $ft $dx 0
set fexx [expr {$dx+$fexx}]
.c create line 0 0 $dx $fexy -width 2 -tags $ft
.c create line $fexx $fexy $bx1 $fexy -width 2 -tags $ft
set mxx $bexx
}
.c addtag $tag withtag $bt
.c addtag $tag withtag $ft
.c dtag $bt $bt
.c dtag $ft $ft
.c move $tag $sep 0
set mxx [expr {$mxx+$sep}]
................................................................................
}
if {$cmd=="stack"} {
return [draw_stack [lrange $spec 1 end]]
}
if {$cmd=="loop"} {
return [draw_loop [lindex $spec 1] [lindex $spec 2]]
}
if {$cmd=="toploop"} {
return [draw_toploop [lindex $spec 1] [lindex $spec 2]]
}
if {$cmd=="or"} {
return [draw_or [lrange $spec 1 end]]
}
if {$cmd=="opt"} {
return [draw_or [list {} [lindex $spec 1]]]
}
if {$cmd=="tailbranch"} {
................................................................................
.c config -width $x1 -height $y1
update
.c postscript -file $name.ps -width $x1 -height $y1
global DPI
exec convert -density ${DPI}x$DPI -antialias $name.ps $name.gif
exec xv $name.gif &
}
proc draw_all_graphs {} {
global all_graphs
foreach {name graph} $all_graphs {
if {[regexp {^X-} $name]} continue
draw_graph $name $graph
}
wm withdraw .
}
|